-
Notifications
You must be signed in to change notification settings - Fork 0
/
testlog.go
142 lines (122 loc) · 3.32 KB
/
testlog.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
// Copyright 2019 The go-jjang Authors
// This file is part of the go-jjang library.
//
// The go-jjang library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-jjang library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-jjang library. If not, see <http://www.gnu.org/licenses/>.
// Package testlog provides a log handler for unit tests.
package testlog
import (
"sync"
"testing"
"github.com/jjang-network/go-jjang/log"
)
// Handler returns a log handler which logs to the unit test log of t.
func Handler(t *testing.T, level log.Lvl) log.Handler {
return log.LvlFilterHandler(level, &handler{t, log.TerminalFormat(false)})
}
type handler struct {
t *testing.T
fmt log.Format
}
func (h *handler) Log(r *log.Record) error {
h.t.Logf("%s", h.fmt.Format(r))
return nil
}
// logger implements log.Logger such that all output goes to the unit test log via
// t.Logf(). All methods in between logger.Trace, logger.Debug, etc. are marked as test
// helpers, so the file and line number in unit test output correspond to the call site
// which emitted the log message.
type logger struct {
t *testing.T
l log.Logger
mu *sync.Mutex
h *bufHandler
}
type bufHandler struct {
buf []*log.Record
fmt log.Format
}
func (h *bufHandler) Log(r *log.Record) error {
h.buf = append(h.buf, r)
return nil
}
// Logger returns a logger which logs to the unit test log of t.
func Logger(t *testing.T, level log.Lvl) log.Logger {
l := &logger{
t: t,
l: log.New(),
mu: new(sync.Mutex),
h: &bufHandler{fmt: log.TerminalFormat(false)},
}
l.l.SetHandler(log.LvlFilterHandler(level, l.h))
return l
}
func (l *logger) Trace(msg string, ctx ...interface{}) {
l.t.Helper()
l.mu.Lock()
defer l.mu.Unlock()
l.l.Trace(msg, ctx...)
l.flush()
}
func (l *logger) Debug(msg string, ctx ...interface{}) {
l.t.Helper()
l.mu.Lock()
defer l.mu.Unlock()
l.l.Debug(msg, ctx...)
l.flush()
}
func (l *logger) Info(msg string, ctx ...interface{}) {
l.t.Helper()
l.mu.Lock()
defer l.mu.Unlock()
l.l.Info(msg, ctx...)
l.flush()
}
func (l *logger) Warn(msg string, ctx ...interface{}) {
l.t.Helper()
l.mu.Lock()
defer l.mu.Unlock()
l.l.Warn(msg, ctx...)
l.flush()
}
func (l *logger) Error(msg string, ctx ...interface{}) {
l.t.Helper()
l.mu.Lock()
defer l.mu.Unlock()
l.l.Error(msg, ctx...)
l.flush()
}
func (l *logger) Crit(msg string, ctx ...interface{}) {
l.t.Helper()
l.mu.Lock()
defer l.mu.Unlock()
l.l.Crit(msg, ctx...)
l.flush()
}
func (l *logger) New(ctx ...interface{}) log.Logger {
return &logger{l.t, l.l.New(ctx...), l.mu, l.h}
}
func (l *logger) GetHandler() log.Handler {
return l.l.GetHandler()
}
func (l *logger) SetHandler(h log.Handler) {
l.l.SetHandler(h)
}
// flush writes all buffered messages and clears the buffer.
func (l *logger) flush() {
l.t.Helper()
for _, r := range l.h.buf {
l.t.Logf("%s", l.h.fmt.Format(r))
}
l.h.buf = nil
}